Examples with ELContextWrapper org.apache.jasper.runtime.JspContextWrapper.ELContextWrapper used on opensource projects

Example 1 with ELContextWrapper

use of org.apache.jasper.runtime.JspContextWrapper.ELContextWrapper in project tomcat by apache.

the class PageContextImpl method proprietaryEvaluate.

/**
     * Proprietary method to evaluate EL expressions. XXX - This method should
     * go away once the EL interpreter moves out of JSTL and into its own
     * project. For now, this is necessary because the standard machinery is too
     * slow.
     *
     * @param expression
     *            The expression to be evaluated
     * @param expectedType
     *            The expected resulting type
     * @param pageContext
     *            The page context
     * @param functionMap
     *            Maps prefix and name to Method
     * @return The result of the evaluation
     * @throws ELException If an error occurs during the evaluation
     */
public static Object proprietaryEvaluate(final String expression, final Class<?> expectedType, final PageContext pageContext, final ProtectedFunctionMapper functionMap) throws ELException {
    final ExpressionFactory exprFactory = jspf.getJspApplicationContext(pageContext.getServletContext()).getExpressionFactory();
    ELContext ctx = pageContext.getELContext();
    ELContextImpl ctxImpl;
    if (ctx instanceof ELContextWrapper) {
        ctxImpl = (ELContextImpl) ((ELContextWrapper) ctx).getWrappedELContext();
    } else {
        ctxImpl = (ELContextImpl) ctx;
    }
    ctxImpl.setFunctionMapper(functionMap);
    ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
    return ve.getValue(ctx);
}